An absolute waste of money

Go in cold, and you're likely to emerge with your blood boiling. This has to be seen to be believed.

It's funny, it's tense, it features two great performances from two actors and the director expertly creates a web of odd tension where you actually don't know what is happening for the majority of the run time.

The film's masterful storytelling did its job. The message was clear. No need to overdo.